Nut-lock.



Patented Dec. 31, 1912.

NUT LOCK.

APPLICATION FILED FEB. 24, 1912.

v I aww/wko@ @@0736 Urm,

' may substantially inclosethe nuts and be ythat of the nut 1, while'the remaining Unirnn s'rnrns rarnnr ernten.

y(rllOIEtCrIll ORBIN, OF MILWAUKEE, WISCONSIN.

NUT-LOCK.

.Application led February 24, 1912..

Specification of Letters Patent.

-Patcnted Dec.; 31, 12971 2. serial no. 679,679.

To all `whom it may concern:

Be it known that I, Gronau Onlnn, a citizen of the United States of America, `residing at Milwaukee, in the county of Milwaukee and State of lVisconsin, have invented new and useful Improvements in Nut- Locks, of which the following is a specihcation..

My present invention relates to improvements in nut locks and has particular application to nut locks of that type employ`v ing a plurality of nuts designed to. threadedly engage the shank of a bolt in relatively reverse directions and a locking sleeve for the nuts.

In carrying out this invention, it is my purpose to provide a nut lock of the class above set fort-h wherein the locking sleeve.

securely locked thereto against accidental` displacement.

`With the above and other objects in view and others of a similar nature, the invention consists in the construction, combination and arrangement of parts hereinafter setforth in and falling within the scope of vthe appendedclaim.

In the accompanying drawing; Figure 1 is an axial sectional view of a nut lock conf structed in accordance with the present in` vention. Fig. 2 is an enlarged fragmentary section illustrating the means for locking the sleeveto the nuts. Fig. 3 is a detail perspective view of the sleeve.

Similar reference characters designate like parts throughout the several views.

Referring now to the accompanying drawing, in detail, my improved nut lock, as shown, includes alpair of nuts 1 and 2, the bore of theformer beingof a diameter greater than that of the latter and formed with a right hand thread, while the nut 2 is provided with a left hand thread. 3 designates the bolt designed to receive the'saidnuts.

In accordance with the present invention and as an essential part thereof, the shank of the bolt at an appropriate' distance from the head, is formed with a ,right hand thread designed to accommodate the threads of the nut l and of a diameter similar.` to

portion of the shank, that is the portion beyond the right handA threaded' portion with respect to the head is of a reduced diameter and formed with left hand threads adapted {t} receive the nut 2, whereby the nut 2may' )e applied' to the bolt' subsequent to the application ofthe nut l thereto, after which the nut l may be vturned in a reverse direction to bind against the nut 2 to produce a locking action. i

In order tolock the nu'ts l and 2 upon the shank of the bolt irrespective of the binding action between such sleeve 4; of va shape of the nuts l and .2 and of` a-length-equal to the combined lengths of said nuts so as to substantially inclose the latter7 thus locknuts, I make use of a ing the nuts upon the bolt against turningv movement. One lof the nuts, the nut l in this instance, is formed with a ture 5- and alning with relatively smallvv aperture sleeve 4. A set screw A7 gaged in the aperture 5 plication `of vthe locking this laperture isa 6 formed in the is threadedly en.

tively small head 8 designed to engage the aperture 6 in the sleeve after the said apertures .have been brought into alinement,

the 4head'8 being formed with a slot 9 de- 65.. corresponding to thatv lateral aperf previous to theapsleeve to the Anuts and as illustrated'is'equipped witha rela# signed to facilitate the movement of the set screw and for another purpose which will be presently described.

Interposed'between the lower end and side v.of the aperture 5 and the set screw is a helical expansion spring l0 designed to exert itstensionupon the set screw so as tov obviate accidental inward movement thereof, and to doubly secure or hold vthe set screw against accidental movement, a pori tion of the wall of the aperture 6 inthe sleeve, is upset, as atfll, and driven into the slot 9 of the head of the set screwthereby eliminating' displacement or has -been applied.

accidental movement of the parts after-the nut lock From the foregoing description taken in connection with the accompanying drawing, the construction and manner of employing my invention will be readily apparent. To

lock the nuts against accidental movement, vthe adjacent faces thereof are 'brought into contact, and t-he set screw 7 is .disposed within the aperture 5 so that the outer end ofthe head 8 thereof lies flush with the adjacent side of the nut. The sleeve 4 is now slid on the nuts and theA aperture 6 therein alined coaXiallywith the aperture in the respective nut. AIn this position of thev parts, the set screw is worked outwardly of the aperture 5 so that the head 8 thereon is disposed within the aperture 6 within the sleeve, thereby holding the parts against accidental disconnection, the spring 10 acting to hold the screw 7 against accidental movement.

I claim:

A nut look comprising a pair of nuts having relatively reverse threads adapted to embrace a bolt, a looking sleeve adapted t0 substantially inclose said nuts, one of said nuts being provided with a large aperture,v while the sleeve is formed with a relatively small aperture alining with the aperture in the nut, a set screw threadedly engaging the larger of the apertures 4and provided with a smallhead ada ted to be disposed in the. aperture n the s eeve, a spring interposed between -one end of the larger aperture in the nut and said set screw therein and acting to hold the set screw against accidental inward movement, and means for assisting the spring to hold the set screw against movement.

In testimony whereof I aix my signature in presence oftwo witnesses.

GEORGE ORBIN. Witnesses:

,HERMAN LOUIS FREDERICK,

ELLA MossURG.

Copies et this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

